Nokia Bluetooth Stereo Headset BH-221 is compatible with the following:
All phones, music players and other devices that support Bluetooth Specification v 2.1, 2.0, 1.2 or 1.1, Handsfree Profile 1.5 or 1.0

@Tashi, I got Black. Always like to have black color in gadgets
Actually I noted good discussion on BH-221 on Mynokiablog where its product manager has also replied. Check this out too.
With N9 it has limitations like no track details shown, No contact name being shown. May be someone from tmo can hack it too